The Mesa Tactical Sureshell carrier is a shotshell carrier for Remington 870 20 gauge model shotguns. It is constructed from milled 6061-T6 aircraft aluminum and features an anodized non-glare matte black finish. This 4 shell carrier uses die cut rubber gaskets in order to hold the shells in place during firing. This carrier is mounted on the right side of the shotgun which is the same side as the ejection port. The Mesa Tactical Sureshell carrier is secured to the receiver of the shotgun with a specific bracket that is designed to withstand years of abuse.